Planing machine, for woodworking, in particular for parquet



Jan. 7, 1958. w. Z'UBER 2,818,895

PLANING MACHINE, FOR WOODWORKING, IN PARTICULAR FOR PARQUET Filed Dec. 21, 1955 3 Sheets-Sheet 1 F I I f Waiter Zuber Jan. 7, 1958 w. ZUBER 2,818,895

PLANING MACHINE, F OR WOODWORKING, IN PARTICULAR FOR PARQUET Filed Dec. 21, 1955 3 Sheets-Shget 2 WaZZ'erZuber" ATTYS'.

United States Patent PLANING MACHINE, FOR WOODWORKING, IN PARTICULAR FOR PARQUET Walter Zuber, Rheineck, Switzerland, assignor to Hasler & Co., Rheineck, Switzerland, a firm Application December 21, 1955, Serial No. 554,523

Claims priority, application Switzerland August 17, 1955 1 Claim. (Cl. 144-118) The planing machine for wood, in particular for parquet wood, is distinguished from theplaning machines of this type which have become known hitherto substantially by being equipped with at least one planing cutter, whose knives rotate in a guiding device of an outer work table about a concentric inner work table, having the shape of a disk and being arranged in the plane of the planed surface.

It is advantageous to equip the planing machine with a lower and an upper work table and with a lower and an upper cutter in order to enable pieces of wood to be machined on their upper and lower surfaces.

The outer work table, which almost reaches the cutter, is conveniently designed so as to form with the diskshaped inner work tablea guide for the pieces of wood, bridging over the annular groove, so that the pieces of wood can be guided satisfactorily over a length of not less than 35 mm., and the wood can be machined without vibration.

The drawing shows an example of anembodiment of the invention, and:

Fig. 1 is a side view of the planing machine,

Fig. 2 is a plan view to Fig. 1,

Fig. 3 is a back view, omitting the exhaust ducts,

Fig. 4 is a plan view, looking on the machine table with the lower work table and a part of the upper work table on alarger scale,

Fig. 5 is a cross-section through the machine table with inner Work table, along the line VV in Fig. 4,

with the adjustable work table along the line VI-Vl in Fig.2, on a larger scale, I

Fig. 7 is a partial longitudinal section through the planing machine, on a larger scale,

Fig. 8 is a cross-section along the line VIIIVIII in Figs. 7 and 4. The planing machine shown base plate 1 and a machine table 2, connected by means of six vertical columns 3, 4, 5, 6, 7, 8, so as to form a rigid machine frame. A sunk longitudinal guide 10 for the pieces of wood which are to be machined is provided on the top surface of the machine table, and equipped on both sides with guide edges 9. The bottom 11 of the longitudinal guide is employed as a work table. An annular groove 12, Fig. 7, whose diameter is greater than the width of the work table 11, is arranged in the longitudinal guide. The knives 14 of a horizontal cutter 13, whose shaft 15 is supported in the vertical bearing 16 of a bearing bracket 17, run in the annular groove 12, and the bearing bracket 17 is supported by means of a clamp 13 on the column 6 so that its height and angular posihere is .equipped with. a.

. Fig. 6 is a cross-section through the machine table 2,818,895 Patented Jan. 7, 1958 17 is adjusted so that the upper cutting edges of the cutter 14 are in the plane of the outer work table 11 and of the 'inner work table 11a. handles is employed for the vertical setting of the bearing bracket 17; the nut is working on a threaded portion 20 of a quick-setting ring 21, which can be set vertically on the column 6 and is secured against rotation by means of a key guided in a slot 22, and enables a fine vertical adjustment of the bearing bracket 17 to be effected. The quick-setting ring 21 is supported on two diametrically opposite horizontal pins 23 in rollers 24, one roller to each pin, which bear respectively against two cams 25. The said cams are supported on pins 26 of an annular support 27 clamped to the column 6, and provided with handles 28, by means of which the profile earns 25 can be rotated slightly, with the assistance of a tubular lever, so as to adjust the bearing bracket 17 quickly to a convenient height. The setting of the bearing bracket 17 to its lower position is intended to enable it to be swung outward, in order to remove or replace the cutter 13. A;

motor 31 (Figs. 2 and 3 supported on the bracket 29 and pivoted on a pin 30 of the bracket is employed to drive the milling cutter 13; the motor belt pulley 32 Y is connected by means of a belt 33 to the belt pulley 34 on the cutter shaft 15. By means of clamping screws 35 on the bracket 29, bearing against the base plate of the motor 31, the tension of the driving belt 33 can-be adjusted. After the bearing bracket 17 has been set to its correct height, it is fixed in its position by tightening the clamping screws 35.

A work table 37, whose height can be adjusted, is pro vided for setting the feed in the front part of the guide 10 in the machine table 2. The work table 37 can be set vertically on the column 3 of the machine frame by means of asupport 39 (Fig. 6) on an arm 38 of the adjustable Work table. A nut 40 is employed for the vertical setting; the nut can be adjusted on a threaded portion 40a of a supporting sleeve 41 fixed on the:

column 3. a

An upper, work table 42 is provided for planing the top side of the pieces of wood; it is arranged above the rear part of the machine table 2, and can be set vertically to the desired height by means of a bearing 43 on the column 8, and by means of a spindle 45 (Fig. 3) equipped with a hand wheel and engaging with a nut 44 in the support 43, with the inner end of the spindle bearing against the column 7. The upper work table is provided on its I under side with a longitudinal guide 10', Fig. 8, having guide edges 9 on both sides. The work table 42 is interrupted by an annular groove 12', open above, whose diameter is greater than the width of the longitudinal The knives 14 of another horizontal cutter guide 10. 13' rotate in the annular groove 12. The lower cutting edges of the knives 14' pointing downward are in the' same plane as the disk-shaped work table 42 outside and inside the annular groove 12. The shaft 15' of the sec- 0nd milling cutter 13 issupported in the vertical bear ing -1 6":.(.Fig'. 2) of another bearing bracket 17, Whose height and angular position can be adjusted by means of a clamp support 18 on the column 8. A nut 19' (Fig. 7) is employed for the vertical setting of the bearing bracket 17. 46 is a bridging bar supporting two guide rings 47 and 48 on the column 8 (Fig. 3). The lower guide ring 47 is supported on the nut 19' while the lower guide ring 48 (Fig. 3) acts as a support for the bearing bracket 17'. The nut 19' is adjustable on a threaded portion 20 of a ring 21', which is vertically adjustable on the column 8, and whose rotation is prevented by means of a key. Two profile cams 25' are supported on two lateral pins, diametrically opposite on the ring 21', by means of which the ring 21 is supported on rollers 24' A nut 19 provided with,

other milling cutter to be swung out sideways,, .the bear-m,

ing bracket 17 mustbe placed in .itsupper position by rotating theprofilecams 3A r'not0n31jsupported on a bracket 29' and pivoted on a pin 30' ,of this bracket. is 4. employed to drive the othermilling cutter;,theimotor belt.

pulley;32" is connected by means of aj driving belt .33. to a beltpulley 34' on the cutter, shaftlS'l Thelmeans for tensioning the driving belt. 33" are .of the samenature as those for the first motor.

The-depth of teedon the upper sideof thewoodpieces 1:. is partly determined by theverticaiadjustmentrof the;

upper "work table, by meansof the spindlezisquippedw,

witha han dwheel, and partly by the'vertical adjustment 0f the bracket 17' by means of the nut 19',".where.. the uppenwork table 42 and the slower cutting, edgespf' I.

the cutter 14' must be in the same plane.

An endless conveyor is employed. to convey the .wood; .1

it consistsof two-lateral, endless. chains arid chain grip- 1; pers 51 arrangedwithuniform spacing 0n the chains and;

connecting them. The chains 50 of the conveyorrunrover four-pairs of sprocket wheels 52,53,"54,I'55, and :are.;.-

guided in longitudinal ;sl'ots'56 of the guide bars -9,

.35 The pair of sprocket wheels:52fis keyedto a drivin shaft'57 and isidriven'by a motor 58 t'hrough avariable:

speeddrive 59. Themotor 58 with the drive..59 is mounted on a-bracket 60 provided on the machine, frame.

61 is a hand wheel ,by means' of; which the desiredspeed of the conveyoi canbe s'etw The pairs of. sprocket wheels 54 and55 are supported on pins on fixed brackets 62 and, 7

63 of the machine frame,whi1e the pair of sprocket wheels .l

53 is supported on the shaft'ofa bracket 64, whose height can be adjusted on the column .4..

The'piecesof wood 65 which are to be planediare stackediin' an open magazine 66 "on the front part of H the "machine table 2, and are pushed away frornunderneaththe stack by the conveyor, ,In order to. keep. them pieces down when they pass the ,first' cutteril3 andto Y 40 feed them-against the upper cutter'13; three consecutive groups of hold-downs 67 are provided, by means. of which the pieces of woodare pushed against the -worktables 37, 11a and 11. ,The hold-downs 67 are supported,

45 so that they can swivel, andare held in position by means in open casings 68 on the pins; 69, onenext to the other,

of tension springs 70, which'pull the hold-downs 67 against the wood.

to removethe chips. 1

Afterlhe work table 11b' has bee'n set .for the thick-:::,.--

ness of the chips on the undersidev o'f.,the wood, andzafterisetting ,the 'upperwork 'tablej42 and the cutter '13 for the thickness of the rchipstoiberemoved from the upper; sideflofthe Wood, and to. adapt the machine'to' the th-ick- 2 ness of the material, the clamping supports of the bear ing brackets 17 and .17 and the clamping support 43 of: the npper.;work-;table 42 can be fixedH-andthe machine can be started. up.

h speed :ofi the conveyor; feedzrcan :be adjusted by means of the hand wheel 61 of the drive from 5 metres per minute to 32 metres per minute. A friction clutch is provided in the usual manner in the conveyor drive, so that fracture of the chain is prevented if the resistance against the motion of the conveyor should rise excessively.

While the invention has been described in detail with respect to a now-preferred example'and embodiment of the invention it-will+beunderstood-by those skilled in the art after understanding theinvention, that various changes and modifications-may be'inade without departing from the spiritand-scope of theinvention and it is intended, therefore, to cover all such changes and modifications .in theappen'ded' claim. i 1

Having thus described by invention, I claim as new and desire to secure by Letters Patent:

A planing machine for wood working, in particular for ,parquets and comprisingin combination at least one cutter, in which-knives of saidcutter rotate in a guiding device of a work -table about a disk-shaped inner work table, concentric with said cutter and-in the plane of the it cutting-edgessaid eutter-beingsupported on a bearing bracket which carries also a drive motor andwhose' height is adjustable and which can be swung out laterally and" is supported on a machine frame, the adjustment of the height of said cutter and-said bearing bracket carrying said cutter drive motor being equipped with a fine-adjustment and a high-speedse'tting either of which can be operated, said heightfiadjustment device of said bearing bracket being provided 'witha threaded ring which: can be displaced -vertically' on a column of saidmachine frame, and whose rotationlis prevented,'and whose-positioncan be adjusted by means-of= a profile cam supported on a-roller, with reference to a fixed supporting sleeve of said columnand-with ;a'- fine adjustment nut which is screwedon the threaded portion and supporting said'bearing bracket'.

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